Kim Jongseok was a military adviser for the North Korean army. A very strict man, who took great pride in being able to help the Korean government. Kim Jongseok was married to a woman named Moon Yi-Na. The two had been trying for a baby for a awhile, and eventually the day had come on December 17th in 1988. Yi-Na had waited for her husband Jongseok to return from a meeting, and when he did she told him the news.
After a few months, the couple found out that they were going to be having twins, a boy and a girl. When the two children were born, the couple named them Jongseok II and Min-Young respectively. The two children were raised to be prim and proper members of society. Starting from when they were first born, they had always been told what to do and if they did it wrong, they'd be reprimanded. Even during their young years of life, they were scolded.
Soon the twins reached the age of three, and they then began attending nursery school. During the time they spent at nursery school, they were taught to enjoy military type games and to hate the miguk nom, otherwise known as "American Bastard". After going through two nursery school learning about military games and learning to hate the "American Bastard", the twins had finally turned six.
As the twins grew older their hatred for the "American Bastard" only intensified due to their father's indoctrinating ways. Their father had always been close with the President, Kim Il-sung , and as such Jongseok II and Minyoung had met him many times, being praised for being ideal North Korean children. As their ninth birthday grew close, their mother had been arrested on suspicion for bedding an American solider in forms of pornography. Only a few weeks from her arrested she was executed publicly. Although still young, the hatred that the twins shared only intensified further.
Their lives rarely strayed from a strict routine from that moment onwards - they would go to school to learn how to fulfill their gender roles to their best ability, return home and continue other studies further and finally they would often have dinner with their father who often invited other military officials and their families. This routine didn't change until they turned 17. The gods, especially Zeus, had been concerned about how the new leader of North Korea, Jong-il had been running the country, and as such decided to keep a close eye on him. Although they had mighty power they wanted to have someone close to the president to serve as their spy, feeding them information so they could monitor him even closer. Zeus had spotted Jongseok II and Minyoung and visited them, posing as another Korean general and told them of their roles given to them by him. Apprehensive at first, both twins eventually accepted and every single time they met the President and spoke to him, they told Zeus all he had said. The twins did this regularly for a year before they were caught in February 1995. Only a few days after their arrest they were sentenced to public execution by firing squad the following year. The gods, seeing this proposed many ways in which they could be saved, Hades denying them all, stating that they had been sentenced to death and as such, should be allowed into his realm. Zeus agreed on the condition that they would get into Elysium in which Hades complied with.
After the council meeting of the gods, Demeter ventured down to earth and visited Jongseok I and had told him of his children's true occupations. By this time, Jongseok himself had become rebellious and upon hearing that his children could be reborn once more, accepted quickly. On August 13th 1996, Jongseok II and Minyoung were executed and Demeter captured their souls secretly and placed them in two trees in one of her sacred gardens in Greece.
As the plan Jongseok I and Demeter had formed took place, starting with the twin's souls being placed in the two trees situated in Demeter's sacred garden, the next step was for them to conceive new children. With Demeter feeling attracted to Jongseok I, she was fully willing. After the two had sex, Demeter gave birth only a few days later, and as she placed the souls of Miyoung and Jongseok II in the two newborn twins, they were then reborn.
The next step in the plan that was formed by Demeter and Jongseok I was to have Mnemosyne erase the children's memories, so they didn't remember anything of their past life. Mnemosyne agreed to this, as long as she got something in return. She wanted one of the twins to one day be her servant, both Jongseok I and Demeter obliged to Mnemosyne's wishes, and with that she erased the twins' memories from their past life.
Unlike their previous life where they were together at all times, the twins were split up by Jongseok I at a young age. At 3, Jongseok II remained in the capital, Pyongyang where as Minyoung was sent to Amsil, a village near the South Korean border. Jongseok II was taught on how to become a great military soldier or leader to carry on his father's name whereas in contrast, Minyoung was taught how to be a good housewife. Both twins were taught how to use basic daggers, strictly instructed by Demeter to Jongseok I, stating that they would need it in their later lives.
As they got older the two became more rebellious and began to go against the rules their guardians had been put into place. The two sent more personal letters (the previous ones being on formal terms and strictly about their education) and gave each other different names. Jongseok II became Saeryun and Minyoung became Kyuri. As they got older, their education became more intense and by the time they were 13, they had a decent amount of knowledge in their fields of education and growing skills in using their daggers.
Once Minyoung turned thirteen, she was already on the path to becoming a good housewife, as she wanted to follower her father's wishes. One day while Minyoung was out with her adoptive mother Yunseo, she wandered off on her own leaving Yunseo by herself. She was carrying her dagger that she was instructed to learn how to use. Once she wandered far enough to be out of sight by everyone, she was attacked by a Cyclops. Although she managed to fend him off for a couple minutes, only to get knocked out by the Cyclops' club. Yunseo eventually came to her rescue and shot an arrow using her bow into the back of the Cyclops' head. Yunseo being a child of Pandia, was able to learn how to survive as a demigod on her own. After they Cyclops' turned into dust, Yunseo carried Minyoung back to the village of Amsil. Once Minyoung was conscious, Yunseo told her that she just tripped and smashed her head off of a rock, Minyoung not remembering any of what happened, believed her.
For the rest of the year, Minyoung remained safe from monsters, as any monster that came her way was simply killed by Yunseo. From the age of thirteen to fourteeen, Minyoung learned how to kill monsters thanks to Yunseo. She was even claimed by Demeter while they were training late one night. On the day of her fourteenth birthday, Yunseo gave Minyoung a katana to protect her with. She explained to her that it'd be more useful to her over her dagger. She then spent the next two years killing multiple monsters that came to attack her.
A few days after her sixteenth birthday, her brother Jongseok II sent her a letter, which was nothing out of the usual. The only difference was this letter was about him defecting from North Korea to South Korea. He told her that he was planning to get out of North Korea by going to Mongolia, and from there some how get on a plane to Seoul, South Korea. He explained that he had laid out a route of escape for her, and that she would have to go to Mongolia herself before getting to Seoul. When Minyoung had finished reading the letter however, Yunseo caught her and asked what the letter was about. When Minyoung didn't answer, Yunseo took the letter from her and read it. When she finished she nodded and said "you'll leave when you're eighteen."
After they two years had passed, and Minyoung was fully prepared to defect. Yunseo drove Minyoung to one of her friends in the capital. This friend just so happened to also want to defect, but only to Mongolia. Minyoung went with the woman and they then went to China, being added by officers who tended to help North Korean defectors. Not long after, Minyoung was sent on a plane to Mongolia.
When they arrived in Mongolia, Minyoung and the woman said their goodbyes and Minyoung left. After spending a night alone in a hotel, she was found by officers in Mongolia who just so happened to help her brother defect. After Minyoung told them her story, and how her brother laid out a path for her to reach South Korea, the officers remembered her brother and decided to help her. Not long after she found herself aboard a plane to Seoul in South Korea.
Upon her arrival in Seoul, she took on the name her brother had called her in their letters; Kyuri. She was then greeted by her brother who took on the name of Saeryun. She was then adopted by her father's former maid who had defected way before her named Miseon, Kyuri also took on the last name Jung. Kyuri and Saeryun stayed in Seoul for a few months, only to eventually leave and go to Camp Half-Blood, a place in New York that Demeter told them about through a dream.